The girl has to bear the consequences after the happy moment. This shadow will stay in the whole life of the girl. This is "Baby" dumping and not waste dumping.
The agrument is not strong enough as the fact is too thin.
If the pregnancy is due to rape incident, that is stupid as that should be reported to Police and Police will request hospital check up and birth control advice will be given.
Even though, there are other choices like "Mothers Choices" or "o Leung Kuk" community groups can offer assistance.